diff --git a/core/trunk/sql/150.sql b/core/trunk/sql/150.sql
index f9534c79f8c9f51455206371a89908eac32d6e62..d428fab5d7262a310ef92c4a19e2bb8e90706e7a 100644
--- a/core/trunk/sql/150.sql
+++ b/core/trunk/sql/150.sql
@@ -237,6 +237,9 @@ ALTER TABLE lc_stack ADD COLUMN regex character varying(32);
 ALTER TABLE res_letterbox DROP COLUMN IF EXISTS confidentiality; 
 ALTER TABLE res_letterbox ADD confidentiality character(1);
 
+ALTER TABLE listinstance DROP COLUMN IF EXISTS process_comment;
+ALTER TABLE listinstance ADD process_comment character varying(255);
+
 DROP TABLE IF EXISTS listinstance_history;
 DROP SEQUENCE IF EXISTS listinstance_history_id_seq;
 CREATE SEQUENCE listinstance_history_id_seq
@@ -283,7 +286,7 @@ visible character varying(1) NOT NULL DEFAULT 'Y'::bpchar,
 viewed bigint,
 difflist_type character varying(50),
 process_date timestamp without time zone,
-process_comment timestamp without time zone,
+process_comment character varying(255),
 CONSTRAINT listinstance_history_details_pkey PRIMARY KEY (listinstance_history_details_id)
 ) WITH ( OIDS=FALSE );
 
diff --git a/core/trunk/sql/structure.sql b/core/trunk/sql/structure.sql
index 8a9d4345881e10dce05a835d4ba3c82611327436..c8d3c73a8ae7d105d3d34b5853556a54e91449e6 100644
--- a/core/trunk/sql/structure.sql
+++ b/core/trunk/sql/structure.sql
@@ -830,7 +830,7 @@ CREATE TABLE listinstance
   viewed bigint,
   difflist_type character varying(50),
   process_date timestamp without time zone,
-  process_comment timestamp without time zone,
+  process_comment character varying(255),
   CONSTRAINT listinstance_pkey PRIMARY KEY (listinstance_id)
 )
 WITH (OIDS=FALSE);
@@ -3544,7 +3544,7 @@ visible character varying(1) NOT NULL DEFAULT 'Y'::bpchar,
 viewed bigint,
 difflist_type character varying(50),
 process_date timestamp without time zone,
-process_comment timestamp without time zone,
+process_comment character varying(255),
 CONSTRAINT listinstance_history_details_pkey PRIMARY KEY (listinstance_history_details_id)
 ) WITH ( OIDS=FALSE );